US748062A - Type-writing machine. - Google Patents

Description

P ATBNTED DEC. 29, 1903.

C. GABRIELSON. TYPE WRITING MACHINE.

APPLICATION FILED AUG. 8, 1902.

N0 MODEL.

UNITED STATE-SN Patented December 29, 1903.

PATIENT OFFICE.

CARL GABRIELSON, OF- SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TOr UNION TYPEWRITER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MAcHlNE.

SPECIFICATION fOrmng part of Letters Patent No. 748,062, dated December 29, 1903- Application led August 8, 1902.

To aZZ whom it may concern:

Be it known that I, CARL GABRIELsoma citizen of the United States, and a resident of Springeld, in the county of Hampden and State of Massachusetts,have inventedcertain new and useful Improvements in Type-Writin g Machines,of which the followingis aspeci flcation.

My present invention relates to spring-ref storing means for escapement or feed-dog rockers or carriers of type-writing machines; and the object of my invention is to provide simple, cheap, and efficient means of the character described which can be readily adjusted to vary the tension of the spring and which is not-liable to become deranged or broken.

To the above and other ends which will hereinafter appear my invention consists in the novel features of construction, arrangements of parts, and combinations of elements to be hereinafter described and claimed.

In the accompanying drawings,wherein like reference charactersindicate like parts in the various views, Figure 1 is a central front-torear sectional view of suiiicient number of parts of one form of type-Writing machine to illustrate my invention in its application thereto. tional view of the same, taken in the ,rear of the escapement or dog rocker and looking toward the front of the machine. Eig is a detail side View of the adjusting-plug. Eig. 4 is an end view of the same looking in the direction of the arrow in Fig. 3.

The top plate 1 of the machine is provided with a depending bracket 2, secured thereto in any suitable manner. This bracket is provided With rearwardly-extending lugs 3, which are tapped to receive bearing-screws 4., that extend through the lugs and are coned at their inner ends 5, Where they constitute bearings for the rock-shaft 6 of the feed-dog or escapement rocker. The screws 4 may each be provided with a lock-nut 7 to prevent au accidental displacement thereof. The rock-shaft 6 constitutes a 4part of the escape-` ment or dog rocker and has an upwardly-extending arm 8 projecting therefrom, which carries the usual feed and detent dogs 9 and ment-wheel 11.

Fig. 2 is a vertical transverse sec- Serial No. 118,874. (No model.)

10, respectively, that coperate with a suitable escapement element, such as the escape- 12 extending therethrough from front to rear for the reception of a screw-driver or other tool for purposes which will hereinafter more clearly appear. The forward portion of the rocker-arm is recessed at 13 for the reception of one end of a coiled compression-spring 14. The walls of the recess 13 are preferably sloping, so that the spring will not bind against them during the oscillation of the rocker. From an examination of Fig. 1 it will be seen that the recess 13 is alined with the screw- `constitutes an abutment for the spring. The

bottom wall19 of the plug is provided with a "nick 20, that receives a screw-driver and by means of which the plug may be turned to adjust it on its threaded connection in the direction of the length ofthe spring. It will.

`be .observed that the coiled compressionspring extends longitudinally between the seat or recess 13 in the dog-rocker and the adjustable plug,which constitutes a relatively fixed abutment therefor, and that the tension of the spring holds it seated in the recess 13 and plug, and thus maintains it connected to the escapement-rocker and relatively fixed part. The opening l2 is so situated that it is alined with the central opening in the coiled spring, and the nick 20in theplug is likewise alinedrwith the openings in the spring and rocker, so that a screw-driver may be introduced from therearof the machine through theopening 12 and through the central opening in lthe spring and engage in the nick 20 of the plug in order to turn the plug,

The arm 8 has an opening and thus adjust the tension of the spring 14.` Extending forwardly from the rocker is an arm 21, which is pivotally connected at its forward end 22 to a depending link 23, that is operatively connected to the universal bar (not shown) in any suitable manner, so that a downward movement of the link 23 will cause the feed-dogs to be moved in the direction of the arrow in Fig. 1 or toward the front of the machine to compress the coiled spring 14, and when pressure on the finger-key is released the spring 14 will restore the rocker to its initial position. (Represented in Fig. 1.)

It will be seen that the pressure of the spring on the recessed plug or abutment 16 is exerted against the threads thereof and that this pressure tends to hold the plug in its adjusted position rather than to displace it therefrom during the actuation of the machine.

By splitting the plug 16 in the manner shown a spring pressure or vresiliency thereof is afforded which tends to bind and hold the adjustable plug in any position to which it may be turned in its threaded bearing.

`1\Totwithstanding the fact that the means for affording an adjustment of the spring tension for the rocker is situated forwardly of the rocker it may be readily adjusted from the rear of the machine, where it is free from obstruction, by introducing a screwdriver or other suitable tool through the opening 12 and engaging it with the plug, thus affording easy access to the tension-adjusting device. Furthermore, the spring and adjusting devices are housed and are so located that they are amply protected against accidental derangement or injury. At the same time it will be noted the construction is such that the operator without a suitable tool is unable to adjust the tension of the feed-rocker or carrier-spring, which is a desideratum since much trouble and annoyance frequently result from the attempts of operators lacking the necessary mechanical skill to adjust the dog-carrier spring, which ordinarily is arranged for convenient adjustment by a permanently-placed thumb-piece.

While I have shown my invention applied to a feed-dog rocker of the general character employed in the No. 6 Remington machine, it should be understood that it is immaterial from certain aspects of my invention what character of escapement carrier or rocker or` what character of type-writing machine the spring restoring device is applied to or whether the carrier or rocker is employed to move the feed dogs or a feed rack transversely to effect a letter-space feed of the carriage.

While I have referred to the device which carries the feed-dogs 9 and 10 as a rocker, it should be understood that this term is used in a generic sense and is intended to cover any reciprocating carrier for an escapement element which moves to and fro during the letter-spacing operations of the machine (whether or not said carrier be pivoted to its support) excepting where the rocker is specifically referred to in the claims as a pivoted one.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination with an escapementrocker, of a relatively xed abutment, a coiled compressionspring disposed longitudinally between said rocker and abutment, and means for adjusting the tension of said spring.

2. In a type-writing machine, the combination with an escapement-rocker, a relatively xed adjustable abutment, and a compression-spring interposed between said escapement-rocker and adjustable abutment and seated in the rocker at one end and in the abutment at the other.

3. In a type-writing machine, the combination with an escapement-rocker having a seat or recess therein, a relatively xed adjustable threaded abutment having a seat or recess therein, and a coiled compression-springinterposed between said escapement-rocker and the adjustable abutment and seated in the recess of the rocker at one end and in the recess of the abutment at the other.

4. In a type-writing machine, the combination with an escapement-rocker having a tool-receiving opening therein, an adjustable abutment fixed relatively of the rocker, and

provided with means adapted to be engaged by a tool to eect an adjustment of said abutment, and a coiled spring which bears at one end against the rocker and at the other end against the abutment, Wherebya tool may be inserted through the said opening in the rocker to adjust the abutment and thus vary the tension of the spring.

5. In a type-writing machine, the combination with an escapementrocker having a screw-driver-receiving opening therein, an adjustable threaded plug fixed relatively of the rocker and'forward thereof and provided with a nick adapted to be engaged by a screwdriver to effect an adjustment of said plug, and a coiled compression-spring which bears at one end against the rocker and at the other end against the abutment, whereby a screw-driver may be inserted through the said opening in the rocker to adjust the plug and thus vary the tension of the spring.

6. In atype-writing machine, the combination of a fixed bracket, an escapement-rocker pivoted to said bracket, a threaded plug seated in a threaded opening in the bracket forward of the rocker, a coiled compressionspring interposed between the plug and the rocker, and means for affording an adjustment of the plug to vary the tension of the spring.

7. In a type-writing machine, the combination of an escapement-rocker having a toolreceiving opening therein, an adjustable relatively xed abutment, a coiled spring interposed between the adjustable abutment and ICO IIC)

the rocker, and having the opening therein alned with the tool-receiving opening in the abutment, and means adapted to be engaged by a tool when inserted through said opening for aording an adjustmentof the abutment.

8. In a type-writing machine, the combination of a fixed bracket, an escapement-rocker pivoted to said bracket and having a tool receiving opening therein, a threaded plug seated in a threaded opening in the bracket forward of the rocker, a coiled compressionspring interposed between the plug and the rocker, the opening in the spring being alined with `the tool-receiving opening in the rocker, and engaging means on the plug to coperate with a tool inserted through the openings in the rocker and spring.

9. In a type-writing machine, the combination of a fixed bracket, an escapement-rocker pivoted to said bracket and having a springreceiving recess or pocket and a screw-driverreceiving opening therein, a threaded recessed plug that is received in a threaded opening in the bracket forward of the rocker and which has a screw-driver nick in the recessed portion thereof, and a coiled spring that is seated at one end in the recess in the rocker and at the other end in the recessrin the plug, said recesses and openings in the rocker and spring being alined, whereby a screw-driver may be inserted through the openings in the rocker and spring and the plug may be adjusted to vary the tension of the spring.

l0. In a type-writing machine, the combination of an escapement-rocker, acoiled compression-spring for restoring said rocker to its normal position, and a longitudinally-adjustable plug that bears on one end of said spring and is adapted to adjust the tension thereof.

11. In a type-writing machine, the combination of an escapement-rocker, a coiled compression-spring which extends longitudinally between the rocker and a relatively ixed bearing-point, and a threaded plug which is adjustable in the direction of the length ofV the spring and bears on one end thereof to vary the tension.

12. In a typewriting machine, the combination of an escapementrocker, a coiled compression-sprin g which extends longitudinally between the rocker and a relatively fixed bearing-point, and a recessed threaded 1ongitudinally-split plug in which one end of the spring is seated and which is adjustable in the direction of the length of the spring to vary the tension thereof.

13. In a type-writing machine, the combination of a reciprocating member carrying `one of the escapement devices, an abutment,

a coiled compression-spring arranged longitudinally between said reciprocating member and said abutment, and means for adjusting the tension of said spring.

14. In a type-writing machine, the combi nation of an escapement-rocker, a relatively fixed bearing, a removable coiled compression-spring interposed and extending longitudinally between said rocker and said relatively tixed bearing, means for preventing a displacement of the spring from said rocker and from-said bearing, and adjustable means associated with one end of the spring for affording an expansion or contraction of the spring to vary the tension thereof.

15. In a type-writing machine, the combination of an escapement-rocker, a relatively fixed bearing, a coiled compression-spring interposed and extending longitudinally between said rocker and said relatively fixed bearing, means for connecting one end of the spring to the rocker and the other to said relatively fixed means, the tension of the spring maintaining the spring connected to said parts, and means for adjusting the tension of said spring.

Signed at Springfield, in the county of Hampden and State of Massachusetts, this 6th day of August, A. D. 1902.

CARL GABRIELSON.

Witnesses:

J. G. DUN-NING, C. S. HAwKINs.

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